Check the listing for details. Waveshare WS DIN Rail Aluminum Case for Raspberry Pi 4, with Cooling Fan. Color: Black, Condition: New. Listed at 18.91 USD. DESCRIPTION DIN Rail Aluminum Case For Raspberry Pi 4, With Cooling Fan And HeatsinksDIN Rail Aluminum Case For Raspberry Pi 4Comes with cooling fan and heatsinksIndustrial Grade, DIN Rail Mount SupportIndustrial Grade DIN Rail MountingDIN Rail Mount Design, Easy-To-Usefor reference only, Raspberry Pi 4 and RS485 TG ETH (B) are NOT included.Aluminum MaterialAdopting Aluminum Material, With Oxidation Sand-Blasting SurfaceCompatible With Certain Raspberry Pi HATsThe Inner Space Allows Accommodating Add-Ons Like PoE HAT (D) To Enable PoE FeatureIngenious Opening DesignReversed GPIO Slot And Openings For Sorts Of ConnectorsThe Raspberry Pi WiFi And Bluetooth Are Still Available, Less Signal FadingThe openings are customizable for 200PCS or more. The larger quantity, the lower price.Dedicated Airflow Vent For Cooling FanComes With Cooling Fan And Heatsinks, Better Heat DissipationOutline DimensionsHow To InstallCustomize Opening ServiceDesign Your Unique Case, The Opening Is Customizable For 200PCS Or More,The Larger Quantity, The Lower PricePACKAGE CONTENTWeight: 0.194 kgThe caseCooling fanHeatsinksScrews pack